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F. 0. MA'TTHIESSEN. GONTINUOUS FILTER FOR PILTERING SUGAR LIQUOR. N0. 329,184.

Patented Oct. 2'7, 1885 N. PETERS. Pholo-Lilhugnpher, wmin m u C.

UNITED STATES PATENT UFFTCEQ FRANZ O. MATTHIESSEN, OF IRVINGTON, NEWV YORK.

CONTINUOUS FILTE R FOR FlLTERlNG SUGAR-LIQUOR.

SPECIFICATION forming part of Letters Patent No. 329,184, dated October 27, 1885. Application filed May 9, 1885. Serial No. 164,866. (No model.)

To aZZ whom it may concern:

Be it known that LFRANZO. Mnrrnrns- SEN, of Irvington, New York, have invented certain Improvements in Continuous Filters for Filtering Sugar-Liquor, of which the following is a specification.

Myinvention relates to apparatus for effecting the filtration of sugar-liquor through a mass of bone-black, which is being continuously or nearly continuously removed from the place where the sugar-liquor is first introduced into the filter, so that the sugar-liquor. is first brought into contact with the more eX- hausted black, and as it makes its way through the filtering apparatus is brought into contact with bone-black, which is less and less ex-' hausted, and is finally discharged from the filter at or near the place where the fresh boneblack is introduced into the filter.

The accompanying drawings, illustrating filtering apparatus embodying my invention, are as follows:

Figure 1 is a top view. Fig. 2 is a central vertical section through the line 00 w on Fig. 1.

Fig. 3 is atransverse section of the lower por- 7 fected by means of the horizontal shaft (L2,,13I0- videdupon its inner end with the bevel-pinion a which engages the teeth a formed upon the under side of the rotating disk a, and which is driven by a belt which engages the pulley a affixed to the portion of the shaft a which projects outside of the cylinder A.

The perforations in the stationary diaphragm are arranged in concentric circles of different diameters, and those in the rotating plate are arranged in concentric circles of like diameters, respectively; but the perforations in the rotating disk are so arranged relatively to the perforations in the stationary diaphragm that When the perforations in the middle portions of the rotating disk are brought into alignment with the corresponding perforations in the middle of the stationary diaphragm the perforations near the periphery of the rotating disk are out of alignment with the perforations near the periphery of the diaphragm,

or, vice versa, when the perforations near the periphery of the rotating disk and those near the periphery of the diaphragm are brought into alignment with each other the perforations near the middle of the plate and of the diaphragm are out of alignment with each other. ment of'the systems of perforations is to effect a uniform discharging movement from all parts of the base of the mass of boneblack A contained in the oylinderA.

The bone-black discharges through the perforations in the diaphragm a, and the rotating plate a falls into a chamber, B, the bottom of which is rounded and forms a trough, the lower half of which is concentric with the horizontal screw-propeller shaft 0, one end, 0, of which projects through the wall of the chamber B, and is provided with a toothed wheel or pulley, by means of which the propeller is rotated; The opposite end of the chamber B communicates, by means of a short tube, B, with the lower end of a vertical elevator cylinder or well, D, containing a vertical elevator-screw, D, the lower end of which is seated in astep, 01, formed upon the bottom of the verticalcylinder D.

A suitable frame extending across the end of the tube B adjoining the lower end of the cylinder D supports the journal 43 for the inner end of the horizontal shaft 0.

At the upper end of the cylinder D there is provided the inclined chute E, by means of which the bone-black elevated by the elevator-screw D is carried off.

The servicepipe F, for conducting the sugarliquor to be filtered into the filter, is situated at a suitable distance below thechute E.

Near its upper end the wall of the cylinder A is provided with a series of perforations, G, through which the sugar-liquor which has passed through the black is conducted to the trough G, from which it is led into suitable receiving-vessels.

One or more thicknesses of blanket, G are arranged in connection with the openings G The object of this relative arrange in the usual manner, to prevent the passage of the bone-black into the trough g.

In operation, the bone-black is fed into the I upper end of the cylinder A, and by means of the perforations G into the trough g. The

speed of rotation of the propeller-shafts C and D is regulated with reference to removing the black from the filter as rapidly as it becomes exhausted, so that its place may be taken by fresh bone-black fed into the upper end of the cylind llhe propelling-screws may be kept in continuous slow rotation, or they may be rotated intermittently, if desired. In either case the substantial result is that the bone-black is fed continuously, or substantially so, through the tion.

filtering apparatus in one direction, while the, sugarfliqu'or is fed through the apparatus and through the bone-black in the opposite direc- The' bone-black, as will be seen, moves through one part of the filtering apparatus.-.v to wit, the cylinder A and the chamber B by its own gravity, and is moved through the remaining portion of the apparatus by me- .chanieal means.

I claim as my invention 1. In apparatus for filtering sugar-liquor 40 through bone-black, a vertical cylinder, into the top of which bone-black is fed, and down which it falls by its own gravity, a receivingchamber at the bottom of said vertical cylinder, and an elevator-tube connected with the 4 5 said receiving-chamber, and means for moving the bone-black from the receiving-chamber and thence upward through the elevator-tube, and discharging it at or near the top of the elevator-tube, in combination with a servicepipe for introducing the sugar-liquor into the upper part of the elevator-cylinder, and a discharge outlet or outlets for the discharge of the sugar-liquor from the apparatus, the arrangement being such that the mass of bone- 55 black is moved through the filtering apparatus in one direction, while the sugar-liquor is moved through it or through a suitable part of it in the opposite direction, substantially as described.

2. The combination, with the bone-black filter, of an upright elevator-cylinder provided with an elevator-screw, the axis of which is coincident with the axis of the said cylinder, for elevating bone-black through said cylinder and discharging it from the top thereof, and means for conveying the exhausted boneblack from the bottom of the filtering-chamher to the lower part of said cylinder, substantiallyas and for the purpose set forth.

F; O. MATTHIESSEN.

Witnesses:

RoB'r. GILOHRIST, O. B. HARVEY. 

